[MrFixr55]

Hi Mike,
Try 45V on the detector if you are using a 201. If a 200, then 22.5 is correct. Note that they also say 40 for the other 2 tubes in the TA 3 Tube Island. However, if you try to run the set on 45V for all tubes, pe prepared to use head phones. I would start out by trying 45V on the detector.

Newer versions of the AK10, especially the 10C but I think the B also used "Orthogonally" mounted RF coils where ine coil is standing up, one is aligned forward and back and the last is mounted left and right.

If you get a signal now but it breaks into oscillation, try 67V on all the tubes except the detector and see if that stops the whistling.